∞ generated and posted on 2020.12.19 ∞
Starting at fertilization, multicellular organisms go through characteristic developmental stages toward become adults.
| To become adults, multicellular organisms must transform themselves from single cells called zygotes, go through multiple stages of cell division, and transform themselves morphologically and physiologically as well. These are the processes of developmental biology, and here we focus especially on videos that illustrate the development and developmental biology of animals. |
A sea biscuit is a kind of echinoderm, also called cake urchin. As we have an interest here in starfish development, also a kind of echinoderm, this video provides a nice context for what we will be seeing the laboratory. Note especially the occurrence of cleavage and gastrulation.
The above video is a bit too sophisticated for our needs, talking about and illustrating the concept of embryonic folding, but is fascinating nevertheless.
The above video walks of through the first two weeks of human embryonic development. It's a pretty incredible video, though some may want to stop watching at 1:50 for moral reasons and instead just use Google to look up the last the three questions below.
The above video shows actually human embryonic development from days 3 to 5. Just incredible.
The above video is a beautiful, remarkably high definition time-lapse video of the development of an alpine newt, though sadly without sound or other means of explaining what is going on.
The above video provides an interesting summary of what the heart is all about, considering its embryology during human fetal development. It is just a wonderful look at the embryonic genesis of an organ.
The above video takes us through especially human fetal development.